1. The blade is too thin, because the stainless steel shaftless screw conveyor lacks the connecting shaft, all the stress points will be on the blade, so the thickness of the blade is very important for the specific application of the mechanical equipment. The selection of moderately thick spiral blades will directly harm the practical application effect of stainless steel shaftless screw conveyors. From one point of view, it is the problem of the quality and material of the stainless steel shaftless screw conveyor blades. Choosing high-quality material machinery and equipment is more conducive to improving the working efficiency of machinery and equipment!
Suggestion: During maintenance, perform a more detailed inspection on the blades of the stainless steel shaftless screw conveyor. The parts are all normal, which can improve the work efficiency.
2. The impeller distance is too small, and the spiral tube is not properly selected; when conveying granular or block materials, usually because the blade wheel pitch is too small, the extrusion working pressure is too large, and the blade is immediately damaged. With the rotation of the shaft, no matter how thick Blades can also cause some damage. Another reason is that the pipe diameter is small, which will also cause excessive working pressure. The damage to the leaves is more serious. After taking the above two countermeasures, the blade speed ratio can be reduced. In order to achieve this practical effect.
Suggestion: For this part, start with the purchase of machinery and equipment. If you buy basic machinery and equipment, grasp the quality of the machinery and equipment immediately. If you buy non-standard machinery and equipment, you must maintain good communication with the interior designer at the critical moment, especially regarding the types of raw materials to be transported. Characteristics, it is necessary to invite interior designers to conduct on-site inspections in order to design good machinery and equipment for you, and at the same time avoid the damaged part of stainless steel screw conveyor blades.
3. The blade is broken.
Critical cause: The spiral blade can be damaged due to the dirty materials of the raw materials. In severe cases, the spiral blade and the screw shaft are in poor contact, causing the spiral blade to tear.
Solution: Destroying the spiral blade requires improving the quality and compressive strength of the accessories. When manufacturing threaded parts, the availability of the blade must be ensured. The welding material is made of wear-resistant welding wire, the welding density is reliable, and the defects such as welding bumps and vent holes are prevented, and the quality of electric welding is guaranteed. , And improve the compressive strength of the screw shaft and the rotating shaft at the same time.
Maintenance points and quality restrictions Reducer, output shaft, shaft and motor shaft can not be separated, burrs, scratches and other shortcomings. The roughness between the surface of the motor shaft and the roller bearing is 0.8 microns. The silicon sealing ring should be free of defects such as cracking and embrittlement, and the inner and outer protruding surfaces should be smooth and smooth, and should be replaced each time it is removed.
Needle sleeves and needle pins must not have defects such as cracks, burrs, scratches, etc. The surface roughness of the needle is 0.4um and 0.4um respectively. The gap between the dental needle and the brace should not exceed 0.10 mm. The shaft and pin sleeve should be free of cracks, burrs and scratches. The outer circle of shaft pin surface roughness is 0.4um, the outer circle is 0.8um, and the outer circle of shaft pin surface roughness is 0.4um.
The concentric error of the shaft pin is 0.013 mm. The concentricity error of the pin sleeve is 0.013 mm. The parallelism of the two sides of the spiral axis of the spiral body does not exceed 1.0mm. Stainless steel screw conveyor blades must be replaced when they are anxiously damaged or deformed and endanger all normal production. Compared with the planned specifications, the damage to the coupling groove is increased by one level, or the original groove is opened at 180O. The gap of the inner hole of the connecting piece is 1-1.5 mm. The axial deflection angle of the coupling should be less than 0.05 mm.
The radial deviation of the connecting shaft should be less than 0.4/100 mm. Stainless steel screw conveyor roller bearings must be replaced when the rolling bearings are corroded, deformed, broken, or damaged. Special types of items must be accepted when the rotating bearing is disassembled, and immediate knocking is prohibited. It is not allowed to add a gasket between the rolling bearing and the seated bearing of the reducer.
The rolling bearing should reliably support the connecting shaft, and the spiral body should not be stuck or bent. When assembling the rolling bearing, the total number of seals on the grid division surface should be adjusted to prevent system leaks between the rolling bearing division surface, and the rolling bearing and the connection The axial gap between the shafts should be 0.10~0.14mm. The shell is damaged and anxious, and everything is no longer able to be manufactured normally, or it cannot be replaced at the next maintenance cycle.
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